Piperidine derivative and use thereof as stabilizers

ABSTRACT

A novel piperidine derivative having a stabilizing effect on a synthetic polymeric material and a composition comprising said piperidine derivative and a synthetic polymeric material.

United States Patent [191 Murayama et al.

[451 Aug. 12, 1975 [73] Assignee: Sankyo Co., Ltd., Tokyo, Japan [22] Filed: Oct. 11, 1973 [21] Appl. No.: 405,570

[30] Foreign Application Priority Data Oct. 26, 1972 Japan 47-107408 [52] U.S. Cl 260/45.8 NZ; 260/45.8 N

[51] Int. Cl. C08f 45/58 [58] Field of Search 260/45.8 NZ, 45.8 N

[56] References Cited UNITED STATES PATENTS 3/1969 Murayama et al. 260/45.8 NZ I 2/1974 Murayama et al 260/45.8 NZ

Primary ExaminerMelvyn l. Marquis Attorney, Agent, or FirmToren, McGeady and Stanger [57] ABSTRACT A novel piperidine derivative having a stabilizing effect on a synthetic polymeric material and a composition comprising said piperidine derivative and a synthetic polymeric material.

26 Claims, No Drawings PIPERIDINE DERIVATIVE AND USE THEREOF AS STABILIZERS DETAILED DESCRIPTION OF THE INVENTION This invention relates to a novel piperidine derivative and use thereof as stabilizer for polymeric materials.

More particularly, the piperidine derivative of this invention has the following formula:

BVCIH3 O R A" R 1 2 3 CH n wherein R represents hydrogen atom, an alkyl group, a substituted alkyl group, an alkenyl group, an alkenyl group, a substituted or unsubstituted aralkyl group, an aliphatic acyl group, an alkoxycarbonyl group or an aralkoxycarbonyl group, n is an integer of l to 4; when n is 1, R represents hydrogen atom, an aliphatic, aromatic or heterocyclic monoacyl group, an alkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, an alkoxyalkyl group, an epoxyalkyl group, an alkoxysulfonylalkyl group, N-substituted carbamoyl group, a N- substituted thiocarbamoyl group, a monovalent group from an oxoacid or group in which R represents hydrogen atom, a lower alkyl group or phenyl group and R represents an alkyl group; when n is 2, R represents carbonyl group, an aliphatic or aromatic diacyl group, an alkylene group,

-an alkenylene group, an alkynylene group, an aralkylene group, a N-substituted dicarbamoyl group or a divalent group from an oxoacid; when n is 3, R represents an aromatic triacyl group or a trivalent group from an oxoacid; and when n is 4, R represents an aromatic tetraacyl group, and A represents a group in which R represents hydrogen atom or a lower alkyl group or, when n is 1, R may represent together with R a group O CH CH -032- CH CH in which R represents the same group as defined in R and may be the same or different from R or a group R CH/ 7 in which m is l or 2 and R represents hydrogen atom or, when n and m are 1, R represents methylene group together with R The inventors of this invention have found that the piperidine derivatives of the above-mentioned formula (I) have a stabilizing effect, especially an effectively preventive property from photoand thermaldeterioration of synthetic polymeric materials such as polyolefin, polyvinyl chloride, polyvinylidene chloride, polyacetal, polyester, polyamide, polyurethane, epoxy resin and the like.

The term polymeric material as used herein is intended to embrace polyolefins including homopolymers of olefins such as low-density and high-density polyethylene, polypropylene, polystyrene, polybutadiene, polyisoprene and the like, and

copolymers of olefins with other ethylenically unsaturated monomers such as ethylene-propylene copolymer, ethylene-butene copolymer, ethylenevinyl acetate copolymer, styrene-butadiene copolymer, acrylonitrile-styrene-butadiene copolymer and the like; polyvinyl chlorides and polyvinylidene chlorides including homopolymer of each of vinyl chloride and vinylidene chloride, vinyl chloride-vinylidene chloride copolymer and copolymers of each of vinyl chloride and vinylidene chloride with vinyl acetate or other ethylenically unsaturated monomers;

polyacetals such as polyoxymethylene and polyoxyethylene;

polyesters such as polyethylene terephthalate;

polyamides such as 6-nylon, 6,6-nylon and 6,10-nylon; and

polyurethanes; and epoxy resins.

Synthetic polymers have been widely utilized, owing to their excellent properties, in various forms or shapes, for example, filament, fibre, yarn, film, sheet, other molded article, latex and foam.

The present piperidine derivatives of the abovementioned formula (I), when more separately classified, include those compounds of the following formulae;

O 12.5 R -N (II) o CH -0 R CH3 CH5 n wherein R R and n are as defined above, and R' represents hydrogen atom or a lower alkyl group:

wherein R R n and m are as defined above, and

wherein R is as defined above.

In the above general formulae (II) to (V), each of R and R, which is referred to in (Ill) is an alkyl group having carbon atoms of l 8, for example, methyl,

ethyl, propyl, butyl or octyl, preferably an alkyl group having carbon atoms of 1 4, most preferably methyl; a substituted alkyl group having carbon atoms of l 3 in its alkyl, for example, 2-hydroxyalkyl, e.g., 2- hydroxyethyl, alkoxyalkyl having carbon atoms of l 4 in its alkoxy, e.g., 2-ethoxyethyl or ethoxymethyl, saturated aliphatic acyl having carbon atoms of 2 l8, preferably 2 4, in its acyl, unsaturated aliphatic acyl having carbon atoms of 3 4 or acyloxyalkyl having benzoyl, e.g., 2-acetoxyethyl, 2-stearoyloxyethyl, 2 benzoyloxyethyl or 2-acryloyloxyethyl, and preferably 2-acetoxyethyl, 2-acryloyloxyethyl or 2- benzoyloxyethyl; cyanoalkyl, e.g., 2-cyanoethyl or cyanomethyl, halogenoalkyl, e.g., 2-chloroethyl, epoxyalkyl, e.g., 2,3-epoxypropyl, or alkoxycarbonylalkyl having carbon atoms of 1 4 in its alkoxy, e.g., a methoxycarbonylmethyl, ethoxycarbonylmethyl, butoxycarbonylmethyl or 2-methoxycarbonylethyl; an alkenyl group having carbon atoms of 3 4, preferably allyl; an alkynyl group having carbon atoms of 3 4, preferably 2-propynyl; a substituted or unsubstituted aralkyl group, for example, benzyl or halogenoor methylsubstituted benzyl, preferably benzyl; a saturated or unsaturated aliphatic acyl group having carbon atoms of 2 8, for example acetyl, propionyl, butyryl, acryloyl, methacryloyl or crotonoyl, preferably a saturated aliphatic acyl having carbon atoms of 2 4 or an unsaturated aliphatic acyl having carbon atoms of 3 4,

most preferably acetyl; an alkoxycarbonyl group having carbon atoms of 2- 5, for example, ethoxycarbonyl or butoxycarbonyl; or an aralkoxycarbonyl group, for example benzyloxycarbonyl. Particularly preferable R is hydrogen atom, an alkyl group having carbon atoms of l 4, allyl group, benzyl group, an alkoxycarbonylmethyl group having carbon atoms of l 4 in its alkoxy, 2,3-epoxypropyl group, Z-saturated aliphatic acyloxyethyl group having carbon atoms of'2 18 in its acyl or an aliphatic acyl group having atoms of 2 4.

Hydrogen atom and methyl group are most preferable. In the above formulae (II) and (IV), R is, when n is 1 an aliphatic monoacyl group such as a saturated aliphatic acyl group having carbon atoms of l l8, preferably 2 18 in which sulfur atom may be put in the acyl chain or an unsaturated aliphatic acyl group having carbon atoms of 3 6, of which the saturated or unsaturated aliphatic acyl may have phenyl substituted with alkyl having carbon atoms of l 4 and/or hydroxy or unsubstituted phenyl, for example, formyl, acetyl, propionyl, isobutyryl, octanoyl, lauroyl, stearoyl, acryloyl, methacryloyl, phenylacetyl, 3-(3,5-di-t'-butyl-4- hydroxyphenyl)-propionyl, sorboyl, cinnamoyl or 3-octylthiopropionyl and preferably saturated aliphatic acyl having carbon atoms of 2- 18, most preferably 8 18, or an aromatic monoacyl group, for example,

benzoyl which may be substituted with alkyl oralkoxy having carbon atoms of l 4, halogen or hydroxy, e.g.,

benzoyl, o-, mor ptoluoyl, p-t-butylbenzoyl, -o-, rnor p-chlorobenzoyl, salicyloyl or 0-, mor p-anisoyl, or aor B-naphthoyl, preferably benzoyl which may be substituted with alkyl having carbon atoms of 1 4 or hydroxy, or a heterocyclic monoacyl group, for example, 2-furoyl, isonicotinoyl, nicotinoyl or morpholincarbonyl; an alkyl group having carbon atoms of l 18, for example, methyl, ethyl, propyl, butyl, hexyl, heptyl, octyl, dodecyl or stearoyl; an alkenyl group having carbon atoms of 3 4, preferably allyl; an alkynyl group having carbon atoms of 3 4, preferably 2-propynyl; an aralkyl group having carbon atoms of 7 4 8, preferably benzyl; an aryl group having carbon atoms of 6 l l, for example, phenyl, o-, mor p-tolyl or aor ,B-naphthyl; an alkoxyalkyl group having carbon atoms of l 4, preferably 1 2, in its alkoxy and its alkyl respectively, for example, methoxymethyl or ethoxymethyl; an epoxyalkyl group, preferably 2,3-epoxypropyl; an alkoxysulfonylalkyl group having carbon atoms of l 4 in its alkoxy and its alkyl respectively, for example, 3-methoxysulfonylpropyl; a N-substituted carbamoyl group or a N- 55 substituted thiocarbamoyl group having a substituent, for example, alkyl having carbon atoms of l 4, e.g., methyl, ethyl or butyl, aryl, e.g., phenyl or cycloalkyl, e.g., cyclohexyl, preferably a carbamoyl group substituted with ethyl, phenyl or cyclohexyl, a monovalent 60 group from an oxoacid, such 'as, a group derived from an oxoacid, e.g., substituted or unsubstituted sulfinic acid, sulfonic acid, phosphoric acid, phorphorus acid or phosphonic acid by removing one hydroxyl group and examples of the oxoacid are benzenesulfinic acid,

benzenesulfonic acid, p-toluenesulfonic acid, methanesulfonic acid, diphenylphosphoric acid, dialkylphos phoric acid of C, --'C,, or diphenylphosphorous acid, dialkylphosphorus acid of C C or a group C=CHCOOR wherein R represents a lower alkyl group having carbon atoms of l 4, preferably methyl and R, represents an alkyl group having carbon atoms of l 8, for example, 2-ethoxycarbonylvinyl, l-methyl-2-methoxycarbonylvinyl, l-methyl-2-octoxycarbonylvinyl or 1- phenyl-2-ethoxycarbonylvinyl.

When n is 2, R is a diacyl group such as a saturated aliphatic diacyl having carbon atoms of 2 18, in which SUlfL. atom may be put in the acyl chain or an unsaturated aliphatic acyl group having carbon atoms of 4 6, preferably a saturated aliphatic diacyl having carbon atoms of 4 l2, e.g., oxalyl, malonyl, succinyl, adipoyl, suberoyl, sebacoyl, thiodipropionyl or fumaryl, an aromatic diacyl having 8 carbon atoms, e.g., terephthaloyl or isophthaloyl preferably terephthaloyl; an alkylene group having carbon atoms of 2 6, for example, ethylene, propylene, butylene or hexamethylene; an alkenylene group having carbon atoms of 4 6, for example, Z-butenylene; an aralkylene group having carbon 'atoms of 8 10, for example, p-xylylene; a N- substituted dicarbamoyl group having a substituent, for example, alkylene having carbon atoms of 2 4 6, e.g., ethylene, propylene, butylene or hexamethylene, or arylene having carbon atoms of 6 7, e.g., p-phenylene or 2,4-tolylene, or p,p -methanediphenylene, a divalent group from an oxoacid, e.g., sulfurous acid, sulfuric acid, substituted or unsubstituted sulfinic acid, sulfonic acid, phosphoric acid or phosphorous acid by removing two hydroxyl groups and examples of the oxoacid are sulfurous acid, sulfuric acid, phenylphosphorous acid.

When n is 3, R is an aromatic triacyl having 9 carbon atoms, for example, trimellitoyl or trimesoyl; or a trivalent group from an oxoacid, e.g., phosphoric acid,.

phosphorous acid or boric acid by removing three hydroxyl groups, for example,

0 I ll I When n is 4, R is an aromatic tetraacyl group having 10 carbon atoms, for example Particularly preferable R is a saturated aliphatic acyl group having carbon atoms of 2 l8, benzoyl group which may be substituted with alkyl of C C or hydroxy, an alkyl group having carbon atoms of 1 18, an ally] group, 2,3-epoxypropyl group, a saturated aliphatic diacyl group having carbon atoms of 4 12, or terephthaloyl group. The lower alkyl group of R in the formula (II) has preferably carbon atoms of l 3 and is exemplified by methyl, ethyl or propyl, preferably methyl or ethyl. In the formula (ll), n is preferred to be 1 or 2. In the formula (IV), n and m are preferred to be I 2 and 1 respectively.

Representatives of the piperidine derivatives (l) of this invention are illustrated hereunder. However, these illustrated compounds are not intended to limit this invention.

The compounds of the formula (ll).

11- l. 9-Aza-3-hydroxymethyl-8,8,9,10,10-

pentamethyl-l ,5-dioxa-spiro[ 5 .5] undecane v ll-2. 9-Aza-3-hydroxymethyl-3 ,8 ,8 l 0, l O- pentamethyl-l ,5-dioxa-spiro[5.5] undecane Il-3. 3-Acetoxymethyl-9-aza-3,8,8,10,10-

pentamethyll ,5-dioxa-spiro[5 .5 undecane II-4. 9-Aza-3-hydroxymethyl-3,8,8,9,10,10-

hexamethyll ,5-dioxa-spiro[5 .5] undecane ll-5. 3-Acetoxymethyl-9-aza-3 ,8 ,8 ,9, l 0, 1 0- hexamethyll ,5-dioxa-spiro[5 .5] undecane Il-6. 9-Aza-3-hydroxymethyl-3,8,8,10,10-

pentamethyl-9-octyl- 1 ,5-dioxa-spiro[ 5 .5] undecane ll-7. 3-Acryloyloxymethyl-9-aza-3 ,8 ,8,10,10-

pentamethyl-l ,5 -dioxa-spiro[ 5 .5 undecane II-8. 9-Aza-3-benzoyloxymethyl-3 ,8 ,8 l O, l O- pentamethyl-l ,5 -dioxa-spiro[ 5 .5 undecane ll-9. 9-Aza-3-benzoyloxymethyl-3 ,8 ,8,9, l O, l 0- hexamethyl-l ,5-dioxa-spiro[5 .5] undecane ll-lO. 9-Aza-3,8,8,9,10,10-hexamethyl-l,5-dioxa-3- stearoyloxymethyl-spiro[5.5 undecane 11-1 1 3-Acetoxymethyl-9-allyl-9-aza-3 ,8 ,8 l 0, l 0- pentamethyl-l ,5 -dioxa-spiro [5 .5 undecane II- 1 2. 3-Acetoxymethyl-9-aza-3 ,8,8,1 0, l0-

pentamethyl-l ,5-dioxa-9-( 2-propynyl )-spiro [5.5 undecane II- 1 3. 3-Acetoxymethyl-9-aza-9-cyanomethyl- 3 ,8,8 l 0, l O-pentamethyl-l ,5-dioxa-spiro [5 .5] undecane II- 1 4. 9-Aza-3-( 2,3-epoxypropyloxymethyl 3,8,8,9,lO,l0-hexamethyl-l,5-dioxa-spiro [5.5] undecane ll- 1 5. 3-Acetoxymethyl-9-aza-9-( 2,3-epoxypropyl 3,8,8,10,10-pentamethyl-l ,S-dioxa-spiro [5 .5] undecane ll- 1 6. 3-Acetoxymethyl-9-aza-9-( 2-hydroxyethyl 3,8,8, 1 O, l O-pent amethyll ,5-dioxa-spiro [5.5] undecane ll- 1 7. 9-( 2-Acetoxyethyl )-3-acetoxymethyl-9-aza- 3 ,8,8, l O, l O-pentamethyl-l ,S-dioxa-spiro [5.5] undecane "-1 8. 3-Acetoxymethyl'9-aza-9-ethoxymethyl- 3,8,8,l0,l0-pentamethyl-1,5-dioxa-spiro [5.5] undecane ll- 1 9. 9-Acryloyl-3-acryloyloxymethyl-9-aza- 3,8,8, 10,10-pentamethyl-l ,5-dioxa-spiro [5.5] undecane ll-20. 9-Aza-9-(p-chlorobenzyl)-3-hydroxymethyl- 3 ,8,8 l O, l O-pentamethyl-l ,5-dioxaspiro[5.5]undecane ll-2 l. 9-Aza-3-ethyl-3-hydroxymethyl-8,8, l 0, l O- teteramethyl- 1 ,5-dioxa-spiro[ 5.5 undecane ll-22. 9-Aza-3-ethyl-3-hydroxymethyl-8,8 l O, l O- tetramethyl-9-(p-methylbenzyl)-l ,5-dioxaspiro[5 .5 ]undecane ll-23. 3-Acetoxymethyl-9-aza-3-ethyl-9- IV-88. Tris(8-aza-7,7,8,9,9-pentamethyl-1,4-dioxaspiro[4.5]-2-decylmethyl)phosphite IV-89. Tetrakis( 8-aza-7,7,8,9,9-pentamethyl-l ,4}

dioxaspiro 4.5 ]-2-decylmethyl)pyromellitate IV-90. 8-Aza-7,7,9,9-tetramethyl-2- stearoyloxymethyl-l ,4-dioxa-spiro[4.5 ]decane IV-9l 8-Aza-7,7,9,9-tetramethyl-2-(mtoluoyloxymethyl )-l ,4-dioxa-spiro[4.5 ]decane IV-92. 8-Aza-7,7,9,9-tetramethyl-2- salicyloxymethyl)-1 ,4-dioxa-spiro[4.5 ]decane The compounds of the formula (V),

V-1 Cis-2,4,7-trioxabicyclo[3.3.0]octane-3-spiroa'-(2',2,6',6'-tetramethylpiperidine) V-2. Cis-2,4,7-trioxabicyclo[3.3.0]octane-3-spiro- 4'-( l ',2,2',6,6'-pentamethylpiperidine) V-3. Cis-2,4,7-trioxabicyclo[3.3.0]octane-3-spiro- 4'-( l -acety1-2',2',6',6'-tetramethylpiperidine) In this invention, the following are included as preferred compounds.

a. Compounds having the aforementioned formula (II) wherein R is hydrogen atom or methyl group, n is l or 2, R is, when n is 1, a saturated aliphatic acyl group having carbon atoms of 2 18 or benzoyl group which may be substituted with alkyl of C C or hydroxy preferably benzoyl or salicyloyl and, when n is 2, a saturated aliphatic diacyl group zzo-czz on 021 having carbon atoms of 12 or terephthaloyl group, and R is methyl group-or ethyl group.

b. Compounds having the aforementioned formula (III) wherein R and R are hydrogen atom, methyl group or ally] group.

' c. Compounds having the aformentioned formula (IV) wherein R is hydrogen atom or methyl group, m is l, n is l or 2, and R is, when n is 1, a saturated aliphatic acyl group having carbon atoms of 2 18 or benzoyl group which may be substituted with alkyl of C C or hydroxy, preferably benzoyl or salicyloyl and, when n is 2, a saturated aliphatic diacyl group having carbon atoms of 4 12 or terephthaloyl.

The compounds of this invention may be prepared,

for instance, as stated below, but the procedures per se may be effected in a well-known manner. 1. The compounds (II-1), (III-l), (IV) and (V) can be prepared by reacting the triacetonamine derivatives (VI) with the trimethylol derivatives (VII), pentaerythritol (VIII), the glycerin derivatives (IX) and the mesoerythritol derivatives (X), respectively, in the presence of an acidic catalyst such as p-toluenesulfonic acid, sulfuric acid or hydrochloric acid in the presence or absence of a solvent with heating.

I no-c'iz, Rt-

(VII) HO-CH cn on 2 C Y HO-CH on OH (VIII) (III-1 i IIO-CII l IIO-Cli :0 (ca R2 L 1 n In the above formulae, R R R n and m are as defined above. 2. Introduction of such groups as acyl group, alkyl group and the like into the hydroxyl group or the amine may be conducted by reacting with a halide in the presence of an acid-binding agent. In general, where the halide is employed in a small amount, the compound having the substituent introduced to the hydroxyl group is obtained, whereas the compound having the substituents introduced to the hydroxyl group and amine if used in an excess amount. As the acid-binding agent may be employed inorganic or organic basic substances such as sodium iodide, potassium carbonate, sodium hydroxide, sodium hydride, triethylamine, sodium alcoholate, potassium p-toluenesulfonate or sodium acetate. Alternatively, the introduction of acyl group may be effected through a reaction with an acid anhydride or an ester interchange reaction with an acid 40 ester, instead of the above reaction with a halide.

\ A-OH In the above formulae, R and n are as defined above, R represents other group than hydrogen atom, N- substituted carbamoyl group, N-substituted thiocarbamoyl group or N-substituted dicarbamoyl group in the above R and X represents halogen atom.

In the above formulae, A and n are as defined above, R, represents other group than hydrogen atom in the above R R" represents other group than hydrogen atom in the above R and X represents halogen atom. 3. Introduction of the N-substituted carbamoyl group, N-substituted thiocarbamoyl group into the hydroxyl group may be conducted through a reaction with a sub stituted isocyanic acid or a substituted isothiocyanic acid in the presence of an acid binding agent.

R 4pc!) R -N A-OH 2 l 2 o R A-o-c- 12" In the above formulae, A and R are as defined above, Y represents oxygen or sulfur atom, R represtearate butane,

sents a substituent on the carbamoyl group or thiocarbamoyl group.

In this invention, the piperidine derivatives (I) employed as a stabilizer may be easily incorporated (l) employed as a stabilizer may be easily incorporated into a synthetic polymeric material by various methods commonly used in the art. The stabilizer may be added to a synthetic polymeric material at any stage in the manufacture of a molded product therefrom. For example, the stabilizer of a dry powder may be admixed with a synthetic polymeric material or a suspension or,

emulsion of the stabilizer may be admixed therewith.

The amount of the piperidine derivative (1) which may be added to a synthetic polymeric material according to this invention is varied upon the kind, nature and purpose for use of the synthetic polymeric material to be added. In general, the amount ranging in 0.01 5% by weight may be employed to the weight of a synthetic polymeric material, but a practical range may be varied upon the synthetic polymeric material and there may be used 0.01 2.0% by weight, desirably 0.02 1.0% by weight for polyolefin; 0.01 1.0% by weight, desirably 0.02 0.5% by weight for polyvinyl chloride and -polyvinylidene chloride; 0.01 5.0% by weight, desirably 0.02 2.0% by weight for polyurethane and polyamide.

The compounds according to the formulae (ll) and (IV) of the present invention are excellent in compatibility in polymeric materials, especially polyolefin.

The above-mentioned stabilizer may be used alone or in admixture with known additives such as antioxidants, ultraviolet absorbents, fillers, pigments and the like. The additives are exemplified by the following. Antioxidants Simple 2,6-dialkylphenols, such as, for example, 2,6- di-tert.butyl-4-methylphenol, 2-tert.butyl-4,6-

dimethylphenol, 2,6-di-tert.butyl-4- methoxymethylphenol and 2,6-dictadecyl-4- methylphenol.

Derivatives of alkylated hydroquinones, such as, for example, 2,5-di-tert.butyl-hydroquinone, 2,5-ditert.amyl-hydroquinone, 2,6-di-tert.butyl-hydroquinone, 2,- S-di-tert.butyl-4-hydroxyanisole, 3,5-di-tert.butyl-4- hydroxyanisole and tris(3,5-di-tert.butyl-4-hydroxyphenyl )phosphite, 3 ,5 -di-'tert.butyl-4-hydroxyphenyldi-( 3 ,5-di-tert.butyl-4-hydroxyphenyl )adipate. Hydroxylated thiodiphenyl ethers, such as, for example, 2,2-thiobis( 6-tert.butyl-4-methylphenol), 2,2- thiobis( 4-octylphenol 4,4 '-thiobis( 6-tert.butyl-3- methylphenol 4,4 '-thiobis( 3 ,6-di-sec amylphenol) and 4,4'-thiobis (6-tert.butyI-Z-methylphenol), 4,4- Bis(2,6-dimethyl-4-hydroxyphenyl)disulfide.

Alkylidene-bisphenols, such as, for example, 2,2-

methylene-bis( 6-tert. butyl-4-methylphenol 2,2 methylene-bis( 6-tert. butyl-4-ethylphenol) 4,4- methylene-bis( 6-tert. butyI-Z-methylphenol 4,4 methylene-bis( 2,6-di-tert.butylphenol 2,6-di-( 3- tert.butyl--methyl-2-hydroxybenzyl )-4-methylphenol, 2,2 '-methylene-bis[4-methyl-6-(a-methylcyclohexyl phenol], 1 1 -bis( 3 ,5-dimethyl-2-hydroxyphenyl 1 1 -bis( 5-tert.butyl-4-hydroxy-2- methylphenyl )-butane, 2,2-bis( 5-tert.butyl-4-hydroxy- 2-methylphenyl)butane, 2,2-bis( 3 ,5-di-tert.butyl-4- hydroxyphenyl)propane, 1,1 ,3-tris-(5tert.butyl-4- hydroxy-Z-methylphenyl)butane, 2,2-bis(5-tert.butyl- 4-hydroxy-2-methylphenyl)-4-n-dodecylmercaptobutane, 1,1 ,5 ,5-tetra( 5-tert.butyl-4-hydroxy-2- methylphenyl)-pentane and ethylene glycol bis[3,3- bis( 3 -tert.butyl-4-hydroxyphenyl)butyrate].

O-, N and S-benzyl compounds, such as, for example 3 ,5 ,3 ,5 -tetra-tert.butyl-4,4 -dihydroxydibenzylether, 4-hydroxy-3,S-dimethylbenzyl-mercaptoacetic acid octadecyl ester, tri(3,5-di-tert.butyl-4- hydroxybenzyl)amine, and bis(4-tert.butyl-3-hydroxy- 2,6-dimethylbenzyl)dithiolterephthalate.

l-lydroxybenzylated malonic esters, such as, for example, 2,2-bis(3,5-di-tert.butyl-2-hydroxybenzyl)malonic acid dioctadecyl ester, 2-(3-tert.butyl-4-hydroxy- 5-methylbenzyl)malonic acid dioctadecyl ester, 2,2- bis( 3 ,5-di-tert.butyl-4-hydroxybenzyl)malonic acid di-dodecylmercaptoethyl ester and 2,2-bis(3,5-ditert.butyl-4-hydroxybenzyl)malonic acid di(4-tert.octylphenyl)ester.

l-lydroxybenzyl-aromatics, such as, for example, 1,3,- 5-tri( 3 ,5-di-tert.butyl-4-hydroxybenzyl)-2,4,6-trimethylbenzene, 1 ,4-di( 3 ,5-di-tert.butyl-4- hydroxybenzyl)-2,3,5,6-tetramethylbenzene and 2,4,6- tri-( 3 ,5-di-tert.-butyl-4-hydroxybenzyl )phenol.

s-Triazine compounds, such as, for example, 2,4- bisoctylmercapto-6-( 3 ,5 -di-tert.butyl-4-hydroxyanilino )-s-triazine, 2-octylmercapto-4,6-bis( 3 ,5-ditert.butyl-4-hydroxyanilino)-s-triazine, 2- octylmerc apto-4,6-bis( 3 ,S-di-tert. butyl-4- hydroxyphenoxy)-s-triaxine, 2,4,6-tris( 3,5-ditert.butyl- 4-hydroxyphenoxy-s-triazine 2 ,4,6-tris( 3 ,5 -ditert.butyl-4-hydroxyphenylethyl)-s-triazine and 1,3,6- tris-( 3 ,5 -di-ter.butyl-4-hydroxybenzyl )isocyanurate.

Amides of 3,5-di-tert.butyl-4-hydroxyphenylpropionic acid, such as, for example, l,3,5-tris(3,5-ditert.butyl-4-hydroxyphenyl-propionyl)-hexahydro-striazine and N,N -bis( 3 ,5-di-tert.butyl-4- hydroxyphenylpropionyl)hexamethylenediamine.

Esters of 3,S-di-tert.butyl-4-hydroxyphenylpropionic acid with monohydric or polyhydric alcohols, such as, for example, methanol, ethanol, octadecanol, 1,6- hexanediol; 1.9-nonanediol, ethylene glycol, 1,2- propanediol, diethylene glycol, thiodiethylene glycol, neopentyl glycol, pentaerythriotol, 3-thia-undecanol, 3-thia-pentadecanol, trimethylhexanediol, trimethylolethane, trimethylolpropane, tris-hydroxyethylisocyanurate and 4-hydroxymethyl-1-phospha-2,6,7 trioxabicyclo[2,2,2]-octane.

Esters of 5-tert.butyl-4-hydroxy-3-methylphenylpropionic acid with monohydric or polyhydric alcohols, such as, for example, methanol, ethanol, octadecanol, 1,6-hexanediol, 1,9-nonanediol, ethylene glycol, 1,2-propanediol, diethylene glycol, thiodiethylene glycol, neopentyl glycol, pentaerythritol, 3-thiaundecanol, 3-thia-pentadecanol, trimethylhexanediol, trimethylolethane, trimethylolpropane, trishydroxyethylisocyanurate and 4-hydroxymethyl-lphospha-2,6,7-trioxabicyclo 2,2,2 octane.

Esters of 3,5-di-tert.butyl-4-hydroxyphenylacetic acid with monohydric or polyhydric alcohols, such as, for example, methanol, ethanol, octadecanol, 1,6- hexanediol, 1,9-nonanediol, ethylene glycol, 1,2- propanediol, diethylene glycol, thiodiethylene glycol, neopentyl glycol, pentaerythritol, 3-thia-undecanol, 3- thiapentadecanol, trimethylhexanediol, trimethylolethane, trimethylolpropane, tris-hydroxyethylisocyanurate and 4-hydroxymethyl-l-phospha-2,6,7- tri-oxabicyclo[ 2,2,2 -octane.

' Acylaminophenols, such as, for example, N-(3,5-ditert.butyl-4-hydroxyphenyl)stearic acid amide and N,-

N-bis( 3,5-di-tert.butyl-4-hydroxyphenyl )-thio-bisacetamide.

Benzylphosphonates, such as, for example, 3,5-di tert.butyl-4-hydroxybenzylphosphonic acid di-methyl ester, 3,5-di-tert.butyl-4-hydroxybenzylphosphonic acid diethyl ester, 3,5-di-tert.butyl-4-hydroxybenzylphosphonic acid dioctadecyl ester and -tert.butyl-4- hydroxy-3-methylbenzylphosphonic acid dioctadecyl ester.

Aminoaryl derivatives, such as, for example, phenyll-naphthylamine, phenyl-Z-naphthylamine, N,N'-

diphenylenediamine, N,N'-di-2-naphthyl-pphenylenediamine, N,N-di-sec.butyl-pphenylenediamine, 6-ethoxy-2,2,4-trimethyll ,2- dihydroquinoline, 6-dodecyl-2,2,4-trimethyl-l ,2-

'dodecyloxy-, 4-benzyloxy-, 4,2,4-trihydroxyor 2- hydroxy-4,4-dimethoxy-derivatives.

l,3-Bis(2-hydroxy-benzoyl)benzenes, such as, for

example, l,3-bis( 2 -hydroxy-4-hexyloxy-benzoyl benzene, l ,3-bis( 2 '-hydroxy-4-octoxy-benzoyl benzene, l ,3-bis( 2 -hydroxy-4-dodecyloxy-benzoyl benzene.

Esters 0f optionally substituted benzoic acids, such as, for example, phenyl salicylate, octylphenyl salicylate, di-benzoylresorcinol, bis(4-tert.butylbenzoyl)- resorcinol, benzoyl-resorcinol, 3,5-di-tert.butyl-4- hydroxybenzoic acid 2,4-di-tert.butylphenyl ester, octadecyl ester or 2-methyl-4,6-di-tert.butylphenyl ester.

Acrylates, such as, for example, a-cyano-B,B- diphenylacrylic acid ethyl ester or isooctyl ester, a-carbomethoxycinnamic acid methyl ester, a-cyano- B-methyl-p-methoxycinnamic acid methyl ester or butyl ester and N-( ,B-carbomethoxy-vinyl )-2- methylindoline. 4

Nickel compounds, such as, for example, nickel complexes of 2,2-thiobis(4-tert.octylphenol), such as the 1:1 and 1:2 complex, optionally with other ligands such as n-butylamine, triethanolamine or N-cyclohexyldiethanol-amine, nickel complexes of bis(4-tert.octylphenyl)sulphone, such as the 2:1 complex, optionally with other ligands such as 2-ethyl-caproic acid, nickel dibutyldithiocarbamate, nickel salts of 4-hydroxy-3,5- di-tert.butylbenzylphosphonic acid monoalkyl esters, such as the methyl, ethyl or butyl ester, the nickel complex of 2hydroxy-4-methyl-phenyl-undecylketonoxime and nickel 3,5-di-tert.butyl-4- hydroxybenzoate.

Oxalic acid diamides, such as, for example, 4,4-dioctyloxyoxanilide, 2,2-dioctyloxy-5,5,-ditert.butyloxanilide, 2,2'-di-dodecyloxy-5,5 -ditert. butyloxanilide 2-ethoxy-5 -tert. butyl-2 -ethyloxanilide, 2-ethoxy-2'-ethyl-oxanilide, N,N-bis-(3- dimethylaminopropyl)oxalamide, mixtures of oand p-methoxy and oand p-ethoxy-di-substituted oxanilides and mixtures of 2-ethoxy-5-tert.butyl-2" ethyloxanilide with 2-ethoxy-2-ethyl-5,4'-ditert.butyloxanilide.

Metal deactivators, such as, for example, oxanilide,

isophthalic acid dihydrazide, sebacic acid bisphenylhydrazide, bis-benzylidene oxalic acid dihydrazide, N,N'-diacetyl-adipic acid dihydrazide,

stearyl, myristyl or tridecyl ester, salts of 2- mercaptobenzimidazole, e.g., the zinc salt, and diphenylthiourea.

Polyamide stabilizers, such as, for example, copper salts in combination with iodides and/or phosphorus compounds and salts of divalent manganese.

Basic co-stabilizers, such as, for example, polyvinylpyrrolidone, melamine, benzoguanamine, triallyl cyanurate, dicyandiamide, urea derivatives, hydrazine derivatives, amines, polyamides, polyurethanes and alkali metal salts and alkaline earth metal salts of higher saturated or unsaturated fatty acids, e.g., Ca stearate, Mg laurate, Na ricinoleate, K palmitate and Zn stearate.

PVC stabilizers, such as, for example, organic tin compounds, organic lead compounds and Ba/Cd salts of fatty acids.

Nucleating agents, such as, for example, 4- tert.butylbenzoic acid, adipic acid and diphenylacetic acid.

Other additives, such as, for example, plasticizers, lu-

bricants, e.g., glycerine monostearate, emulsifiers, antistatic agents, flameproofing agents, pigments, carbon black, asbestos, glass fibres, kaolin and talc. Other additive such as these may be usually blended into the piperidine derivative (I) of this invention and advantageously employed at a ratio of 0.5 3 parts to 1 part.

Examples 1 to 8 describe the synthetic polymeric material compositions having incorporated therein the piperidine derivative (1) and their stabilizing effects and Referential Examples 1 to 14 describe the preparation of the piperidine derivative (I).

EXAMPLE 1 into parts of polypropylene [Noblen JHH-G, trade name, after twice recrystallizations from monochlorobenzene, available from Mitsui Toatsu Chemicals Inc.] was incorporated 0.25 part of the stabilizer of this invention. The resulting mixture was blended and molten. The molten mixture was molded into a sheet with a thickness of 0.5 mm. under heating and pressure.

The sheet was exposed to irradiation of ultraviolet ray at 45C in a Fade-Meter andthe time when the sheet becomes brittle was measured.

The results are shown in Table 1.

EXAMPLE 2.

Into 100 parts of high-density polyethylene [Hi- Zex, trade name, available from Mitsui Toatsu Chemicals lnc., after twice recrystallizations from toluene] was incorporated 0.25 part of the stabilizer of this invention. The resulting mixture was blended and molten and molded into a sheet with a thickness of 0.5 mm. under heating and pressure.

The sheet was exposed to irradiation of ultraviolet ray 1.; 45C inv a Fade-Meter and the time when the sheet becomes brittle was measured.

The results are given in Table l. The Nos. of stabilizers recited hereinafter are referred to hereinbefore.

Table 1 Stabilizer Polypropylene High-density No. Polyethylene 11-2 620 hours 1280 hours 11-3 700 1460 1I-4 680 1440 11-5 760 1580 11-7 880 1760 11-8 820 1640 11-10 860 1920 11-14 720 1700 11-15 880 1820 11-20 640 1 180 11-21 680 1420 11-22 660 1260 11-25 820 1780 11-28 840 1880 11-30 700 1620 11-32 860 1760 11-33 880 1940 11-40 500 940 11-44 580 1060 11-50 620 1160 11-51 720 1480 11-56 840 1620 11-57 880 1680 11-59 820 1760 11-72 680 1240 11-73 560 1 160 11-74 460 1080 11-75 920 1480 "-76 920 1700 11-77 900 1520 11-78 880 1640 11-79 900 1820 11-80 880 1500 11-81 740 1460 11-82 900 1780 111-1 720 1540 111-2 780 1640 Ill-3 820 1780 111-4 800 1720 111-7 -780 1680 111-8 760 1620 111-9 840 1760 111-10 880 1880 111-1 1 900 1880 111-1 940 1960 1V-1 620 1300 IV-2 660 1380 1V-4 720 1580 1V-5 680 1520 1V-8 640 1480 1V-9 800 1780 lV- 580 1220 1V-1 1 640 1360 1V-14 720 1560 1V-16 720 1520 1V-17 740 1600 1V-19 860 1840 1V-20 760 1640 lV-24 620 1 100 1V-25 800 1740 lV-26 760 1600 1V-27 600 1220 1V-28 780 1720 lV-37 720 1440 1V-40 780 1780 lV-4l 700 1620 Table l-Continued Stabilizer Polypropylene High-density No. Polyethylene 1V-42 720 1600 1V-43 600 1480 lV-44 740 1780 1V-45 800 1820 1V-53 620 1240 1V-54 680 1440 1V-56 640 1280 1V-59 700 1340 1V-60 780 1520 1V-62 640 1320 1V-71 800 1860 1V-72 880 2020 1V-74 940 2200 1V-76 740 1700 1V-77 640 1420 IV-90 580 1360 1V-91 560 1480 1V-92 700 1680 V-1 620 1380 V-2 640 1420 Tinuvin 327* 300 640 None 60 380 Tinuvin 327: 2-(Z-hydroxy-3.5-di-tcrt-buty1phcnyl )-6-ch1oro- 1 .2 3-triazol EXAMPLE 3.

Into 100 parts of polystyrene [Styron, trade name, after recrystallization from a mixture of benzene with methanol, available from Asahi-Dow Limited] was incorporated 0.25 part of the stabilizer of this invention.

The resulting mixture was molded at 180C under pressure into a plate with a thickness of 1 mm.

The plate thus formed was subjected to the exposure of ultraviolet ray irradiation in a Fade-Meter at 45C for 500 hours. A test piece of the treated plate was tested for color-difference by means of a colordifference colorimeter according to the method prescribed in Japanese Industrial Standard K7103, and a change of the yellowness index of the plate was calculated according to the following equation:

AYl Y1 Yl wherein AYI means a change of yellowness index, Y1 means a yellowness index after exposure and Y1 means an initial yellowness index of a test piece.

The results are shown in Table 2.

Tinuvin P: 2-(2-hydroxy-5-mcthyl)bcn1o-1.2.3-triuzol EXAMPLE 4.

Into parts of ABS resin [Kane Ace B-12, trade name, available from Kanegafuchi Chemical Industries, Co., Ltd.] was incorporated 0.5 part of the stabilizer of this invention, the resulting mixture was kneaded on a kneading roll at 160C for 6 minutes and then molded into a sheet with a thickness of about 0.5 mm.

The sheet was treated in a sunshine weather-ometer for 50 hours and tested for retentions of ultimate elongation and of ultimate tensile strength as well as coloration degree were determined by a conventional method. The results are shown in Table 3.

Into 100 parts of 6-nylon resin [CMll I, trade name, availabel from Toray Industries 1nc.] was incorporated 0.25 part of the stabilizer of this invention. The resulting mixture was heated and melted and then molded into a film having a thickness of about 0.1 mm. under pressure by a conventional compression molding machine. The film thus formed was aged under the following aging condition and thereafter subjected to a tensile test to determine the retentions of tensile strength and elongation. Aging conditions 1. Exposure to ultraviolet ray for 200 hours in a Fade-Meter at 45C.

2. Aging at 160C for 2 hours in a Geers aging tester. The results are shown in Table 4.

Into 100 parts of polycaprolactone type polyurethane [E-5080, trade name, available from The Nippon Elastollan Industries Ltd.] was incorporated 0.5 part of the stabilizer of this invention. The resulting mixture was heated and melted and then molded into a sheet having a thickness of about 0.5 mm. The sheet thus formed was subjected to the exposure to ultraviolet ray in a Fade-Meter at 45C for hours and then tested for the retentions of elongation and tensile strength.

The results are shown in Table 5.

Table 5 Stabilizer Retention of Retention of No. elongation tensile strength 1I-5 86% 91% III-4 91 93 111-1 1 96 96 lV-l 83 87 IV 1 7 9O IV-26 88 91 lV-76 93 None 74 52 EXAMPLE 7 Into parts of polyvinyl chloride [Geon 103EP, trade name, available from the Nippon Zeon Co., Ltd.] were incorporated 3 parts of butyl tin maleate, 0.5 part of butyl stearate and 0.25 part of the stabilizer of this invention and the resulting mixture was kneaded for 5 minutes on a kneading roll at C and formed into a sheet with a thickness of 0.5 mm. The sheet was treated in a sunshine weather-ometer for 300 hours and then the discoloration thereof was observed.

The results are shown in Table 6.

Into 100 parts of polyester resin [Ester-G13, trade name, available from Mitsui Toatsu Chemicls, lnc.] were incorporated 1 part of benzoyl peroxide and 0.2 part of the stabilizer. The resulting mixture was cured by pre-heating at 60C for 30 minutes and then heating at 100C for additional 1 hour to be formed into a plate with a thickness of 3 mm.

The plate thus formed was exposed to irradiation in the sunshine weather-ometer for 60 hours and the change of yellowness index thereof was determined according to the same method as described in the above Example 3.

The results are shown in Table 7.

Table 7 Stabilizer No. YI AYl 11-8 2.2 +7.7 lII-l 2.3 +6.9 111-11 2.3 +6.8 III-12 2.5 +7.3 lV-9 2.5 +8.0 lV-l6 2.3 +8.2 1V-45 2.2 +7.9 1V-72 2 3 +7.7 None 1 8 +13.1

Referential Example 1. 9Aza-3-hydroxymethyl-3,8,8,10,IO-pentamethyl-l ,5- dioxa-spiro-[5.5 ]undecane (Illustrated compound 11-2) To 32.7 g of p-toluenesulfonate of triacetonamine were added 12 g. of trimethylolethane, 1.5 g. of p-toluenesulfonic acid and 200 ml. of toluene and reflux with heating was conducted for hours while the water formed was removed. After cooling, neutralization was made by the addition of an 30% aqueous solution of sodium hydroxide and separation of liquids was effected to recover a toluene layer, which was then washed with water, dried and concentrated under reduced pressure Residual crystals were recrystallized from a mixed liquid of 1:1 of benzene-petroleum ether to give the end product as white crystals melting at 125 126C.

Analysis for C H NO Calculated: C, 65.33%, H, 10.57%; N, 5.41% Found: C, 65.12%; H, 10.47%; N 5.47%

Referential Example 2. 9-Aza-3-ethyl-3-hydroxymethyl-8,8,10,10-tetramethyl- 1,5-dioxaspiro[5.5lundecane (Illustrated compound 11-21 In the substantially same manner as shown in the Referential Example I, 32.7 g. of p-toluenesulfonate of triacetonamine, 13.4 g. of trimethylolpropane and 3 g. of p-toluenesulfonic acid were reacted and the aftertreatment was effected to give the end product as white crystals melting at 106 107C.

Analysis for C H NO Calculated: C, 66.38%; H, 10.77%; N, 5.16%

Found: C, 66.43%, H, 10.83%; N, 5.24% Referential Example 3 2,2,6,6-Tetramethylpiperidine-4-spiro-2 1 ,3 dioxane)-5 '-spiro-5"-( 1,3"-dioxane)-2"-spiro-4'"- (2",2",6",6-tetramethylpipericline) (Illustrated compound 111-1) 163 g. of p-toluenesulfonate of triacetonamine, 17.6 g. of pentaerythritol and 3 g. of p-toluenesulfonic acid were reacted and treated in the same manner as shown in Referential Example 1 to give the end product as white crystals melting at 136.5 137C.

Analysis for C H N O Calculated: C, 67.28%; H, 10.31%; N, 6.82% Found: C, 66.98%; H, 10.28%; N, 6.76%

'Referential Example 4 8-Aza-2-hydroxymethyl-7 ,7 ,9,9-tetramethyl-1,4-dioxaspiro[4.5]decane (Illustrated compound IV-l) To 12.4 g. of p-toluenesulfonate of triacetonamine were added 7 g. of glycerine, l g. of p-toluenesulfonic acid and 25 ml. of toluene and the mixture was reacted with heating at l 10C for 1 hour. After cooling, crystalline mass separated was recovered by filtration, 7 g. of potassium carbonate and 25 ml. of icewater were added and extraction with chloroform was done. The chloroform solution was concentrated after drying, the crystalline residue was recrystallized from ethanol to give the end product as white crystals melting at 139 Analysis for C H NO Calculated: C, 62.85%, H, 10.11%; N, 6.11% Found: C, 63.10%; H, 10.11%, N, 6.02%

IR spectrum (Nujol mull): The absorption band of 1 which was observed in the starting material disappeared and the absorption bands of w- 1050 cm and 11,, 3270 cm were seen.

Referential Example 5 2Acetoxymethyl-8-aza-7,7,9,9-tetramethyl-1 ,4-dioxaspiro[4.5]decane (Illustrated compound lV-8) In the wholly same manner as in Referential Example 4, p-toluenesulfonate of triacetonamine was reacted with glycerine monoacetate to give the end product as colorless liquid of b.p. l28C./2 mmHg.

Analysis for C H NO Calculated: C, 61.96%; H 9.29%; N, 5.16% Found: C, 62.20%, H, 9.38%, N 5.32%

IR spectrum (liquid film): 11 1745 cm, V a- 1040 cm NMR spectrum (CCl soln.): 5.6 6.5 1-(5H, multiplet), 7.97 1-(3H, singlet), 8.4 8.6 'r(4H, broad doublet), 8.86 1*(12H, singlet). Referential Example 6 Cis-2,4,7-trioxabicyclo[3.3.0]octane-3-spiro-4- (2,2,6,6-tetramethylpiperidine) (Illustrated compound V-l) To 21.4 g. of p-toluenesulfonate of triacetonamine were 10.2 g. of meso-erythritol, 2 g. of p-toluenesulfonic acid and 25 ml. of toluene, the reaction was effected with heating at C for 2.5 hours and then under reflux for additional 6 hours. After cooling, crystalline mass separated was recovered by filtration, an 10% aqueous solution of sodium hydroxide was added thereto and crystalline mass was separated after dissolution. The crystalline mass was recovered by filtration and dissolved in n-hexane. Then, the solution is dried and allowed to stand under cooling to separate crystals, which were recovered by filtration to give the end product as white crystals melting at 87 88C.

Analysis for C H NO Calculated: C, 64.70%; H 9.61%; N, 5.80% Found: C, 64.58%, H, 9.55%; N 5.73%

IR spectrum (Nujol mull): The absorption band of w= seen in the starting material disappeared.

NMR spectrum (CDCI soln.): 5.15 5.17 1' (2H, multiplet, J=1 0/5), 5.947 (2H, doublet, J=ll c/s), 6.57'r (2H, multiplet, J=1l c/s, J=1 c/s), 8.31 1 (4H, doublet), 8.487 (4H, doublet), 8.80 r 12H, singlet).

Mass spectrum: M m/e 241 (Calculated Molecular Weight 241 I In accordance with the methods shown in Referential Examples 1 to 6, the following compounds were synthesized.

The compounds of the formula (II): 9-Aza-3-hydroxymethyl-3,8,8,9,10,10-hexamethyl,1,5-dioxaspiro [5.5]undecane. bp 152 154C./3 mmHg. 9-Aza-9-(p-chlorobenzyl)-3-hydroxymethyl- 3 ,8,8,10,10-pentamethyl-1,5-dioxaspiro[5.5]undecane. mp 143 144C. 9-Aza-3-ethyl-3-hydroxymethyl-8 ,8,10,10-

tetramethyl-9-(p-methylbenzyl )-1 ,5-dioxaspiro[5.5]undecane. m.p. 145.5 146C.

9-AZa-3-hydroxymethyl-3,8,8,10,10-pentamethyl-9- iodomethyl-1,5-dioxa-spiro[5.5lundecane. m.p. 216 217C. (decomp.)

9-Aza-9-benzyl-3-ethyl-3-hydroxymethyl-8 ,8 ,10, 10-

tetramethyl-l ,5-dioxa-spiro[ 5 .5 undecane. m.p.

1 10 1 13C. v The compounds of the formula (III): 1 ,2,2,6,6-Pentamethylpiperidine-4-spiro-2'-( l ,3-

dioxane)-5'-spiro-5"-(1",3"-dioxane)-2'"spiro- 4"'-( l ",2"',2',6"',6'-pentamethylpiperidine).

mp 201.5 203C. 1-Benzy1-2,2,6,6-tetramethy1piperidine-4-spiro-2'- (l,3'-dioxane)-5 spiro--( 1 ,3"-dioxane)-2' spiro-4"'-(1 benzyl- 2",2",6,6"'-tetramethylpiperidine). mp 21 1 212C.

The compounds of the formula (IV):

8-Aza-2-hydroxymethyl-7,7,8,9,9-pentamethyl- 1 ,4-

dioxaspiro[4.5]decane. mp 77C.

8Aza-8-benzyl-2-hydroxymethy1-7,7,9,9 tetramethyl-1,4-dioxa-spiro[4.5]decane. m. 93.5 94.5C.

2-Acetoxymethyl-8-aza-7,7,8,9,9-pentamethyl- 1 ,4-

dioxaspiro[4.5]decane. b.p. 123 125C/O.5 mmHg 2-Acetoxymethyl-8-aza-8-benzyl-7,7,9,9-

tetramethyl-l ,4-dioxa-spiro[4.5 ]decane bp 154 154C/0.002 mmHg 8-Aza-8-( Z-hydroxyethyl)-2-hydr0xymethyl-7,7,9,9-

tetramethyl-l,4-dioxa-spiro[4.5]decane. mp 94 95C.

8Acetyl-8-aza-2-hydroxymethy1-7,7,9,9-

tetramethyl-l,4-dioxa-spiro[4.5]decane. mp 1 13 1 14C.

The compound of the formula (V).

Cis-2 ,4,7-trioxabicyc1o[ 3 .3 .0 ]octane- 3-spiro-4 (l,2,2,6,6-pentamethylpiperidine). mp 83 84C.

Referential Example 7 3-Acetoxymethyl-9-aza-3 ,8 ,8, 10,10-pentamethyl-l ,5- dioxa-spiro-[S.5]undecane (Illustrated compound 11-3) To a solution of 20 g. of 9-aza-3-hydroxymethy1- 3 ,8,8 10, 10,-pentamethyl-1 ,S-dioxaspiro[5.5]undecane and 26 g. of triethylamine in 100 ml. of ether was added 20 g. of acetyl chloride under cooling to 5 10C.

After heating under reflux for 3 hours and cooling, an 10 aqueous solution of potassium carbonate was added and extraction with ether was done. The ether solution was dried and concentrated. The residue was recrystallized from ether to give the end product as white crystals melting at 95 96C.

Analysis for C H NO Calculated: C, 64.18%; H, 9.76%; N, 4.68% Found: C, 64.17%; H, 9.60%; N, 4.62% IR spectrum (Nujol mull): v 1730 cm Referential Example 8 2-Acetoxymethyl-8-aza-7 ,7,9,9-tetramethyl-1 ,4-dioxaspiro-[4.5]decane (Illustrated compound IV-8) To g. of 8-aza-2-hydroxymethy1-7,7,9,9- tetramethyl-l ,4-dioxa-spiro[4.5]decane were added 27 g. of acetic anhydride and 25ml. of chloroform and dissolved with heating. The reaction was conducted at room temperature for 4 days to separate crystalline acetate of the end product. After recovery by filtration and washing with ether, to 8.7 g. of the crystal were added 7.2 g. of potassium carbonate, 10 g. of ice and 10 ml. of water and extraction with chloroform was done. The chloroform solution was washed with a saturated solution of sodium chloride in water, dried and the chloroform was distilled off. The liquid residue was subjected to distillation under reduced pressure to give the end product as colorless liquid of bp 1 12C/ 1 mmHg, which was the same as obtained in Referential Example 5.

Analysis for C l-I NO Calculated: C, 62.96%; H, 9.29%; N, 5.16% Found: C, 61.82%; H, 9.19%; N, 5.05%

IR spectrum (liquid film): Wholly identified with that of the product obtained in Referential Example 5.

Referential Example 9. Bis(8-aza-7,7,9,9-tetramethyl-1 ,4-dioxa-spiro[4.5]-2- decylmethyl)-terephthalate (Illustrated compound IV- 76) To 3 g. of 8-aza-2-11ydroxymethyl-7,7,9,9- tetramethyl-l,4-dioxa-spiro[4.5]decane were added 1.3 g. of terephthaloyl chloride, 0.9 g. of potassium carbonate and 30 ml. of benzene and the reaction was effected by heating under reflux for 4 hours. After cooling, to the reaction liquid was added an 5% aqueous solution of potassium carbonate and extraction with chlorororm was done. The chloroform solution was dried and concentrated. The residue was cooled and the separated crystals were recovered by filtration. The benzene solution of the crystal was poured into a silica gel column and from those fractions eluted from ethyl acetate was given the end product as white crystals melting at 134 135C.

Analysis for C H N O Calculated: C, 65.28%; H, 8.22%; N, 4.76% Found: C, 65.54%; H, 8.17%; N, 4.95%

IR spectrum (Nujol mull): 11 1730 cm In accordance with the methods shown in the Referential Examples 7 to 9, the following compounds were synthesized.

The compounds of the formula (II): 3Acetoxymethyl-9-aza-3,8,8 ,9,10,10-hexamethyl- 1,5-dioxaspiro[5.5]undecane. mp 91 92C.

3Acryloyloxymethyl-0-aza-3 ,8,8,10, 10-

pentamethyl- 1 ,5dioxa-spiro[ 5 .5 ]undecane. mp

76 79C. 9-Aza-3-benzoyloxymethy1-3,8,8,10,10-

pentamethyll ,5-dioxa spiro['5.5 ]undecane. mp

9-Aza-3 ,8,8,9,10,10-hexamethyl-1,5-dioxa3- stearoyloxymethyl-spiro[5.5]undecane. mp 41 42C.

3Acetoxymethyl-9-aza-3ethyl-8,8 1 0, l 0- tetramethyl- 1 ,5-dioxa-spiro[ 5 .5 undecane. mp 52 1 9-Aza-3-ethyl-8 ,8,9, l 0, IO-pentamethyl-l ,5-dioxa-3- stearoy1oxymethyl-spiro[5.5]undecane. mp 43 44C.

9-Aza-3 ,8,8,9,10,10-hexamethyl-1 ,5-dioxa-3- salicyloyloxymethyl-spiro[5.5]undecane. mp 69 71C.

9-Aza-3-ethyl-8,8,9,10,10-pentamethy1- 1 ,5-dioxa-3- salicyloyloxymethyl-spiro[ 5 5 ]undecane. mp

Bis( 9-aza-3 ,8,8,10,10-pentamethyl-1,5-dioxaspiro[5.5]-3-undecy1methyl)adipate. mp 107 108C.

Bis(9-aza-3 ,8,8,10,l0-pentamethyl-1 ,5-dioxa-spiro- [5.5]3-undecylmethy1)terephthalate. mp 127.5 128..5C.

3Acctoxymethyl-9aza-9-benzy1-3-ethyl-8 ,8,l0,10-

tetramethyl- 1 ,5-dioxa-spiro[5.5]undecane mp 86 88C.

9-Aza-3-ethyl-3-stearoy1oxymethyl-8 ,8, 10,1 0-

tetramethyl-l ,5-dioxa-spiro[5.5]undecane mp 50 52C.

9-Aza-3-benzoyloxymethyl-3-ethyl-8 ,8,10,10-

tetramethyl- 1 ,5-dioxa-spiro[5 .5 ]undecane mp 84 86C.

9-Aza-3benzoyloxymethyl-3ethy1-8 ,8,9,10, 10-

pentamethyl-l ,5-dioxa-spiro[5.5 ]undecane mp 84 C.

9-Aza-3-ethy1-3-salicyloyloxymethyl-8,8 ,10,10- tetramethyl- 1 ,5-dioxa-spiro[ .5 ]undecane 110 11 1C.

Bis(9-aza-3-ethyl-8,8,10,10-tetramethyl-1,5-dioxaspiro-[5.5]-3-undecylmethyl)adipate mp 87 885C.

Bis(9-aza-3-ethyl-8,8,9,10,10-pentamethyl-1,5-

dioxaspiro[5.5]-3-undecylmethyl)adipate 55.5 57C.

Bis( 9-aza-3 ,8,8,9,10,10-hexamethyl-1,5-dioxaspiro[5.5]-3-undecylmethyl)adipate mp 130 Bis(U-aza-3-ethyl-8,8, l0,10-tetramethyll ,5-dioxaspiro[5.5]-3-undecylmethyl) terephthalate mp 128 129C.

Bis(9-aza-3-ethyl-8,8,9,10,10-pentamethyl-1,5-

dioxa spiro[ 5.5 ]-3-undecylmethyl )terephthalate mp 138 140C.

The compounds of the formula (1V):

2-Acetoxymethyl-8-acetyl-8-aza-7,7,9,9-

tetramethyl-l,4-dioxa-spiro[4.5]decane. bp 123 128C/0.0007 mmHg.

8-Aza-2-butyryloxymethyl-7 ,7,9,9-tetramethyll ,4-

dioxaspiro[4.5]undecane. bp 150 151C/4 mmHg 8-Aza-2-decanoyloxymethyl-7,7,9,9-tetramethyll,4-dioxaspiro[4.5]undecane. bp 190 192C/2 mmHg A 8-Aza-7,7,8,9,9-pentamethyl-1 ,4-dioxa-2- salicyloyloxymethyl-spiro[4.5]undecane. bp 188 l90C/0.002 mml-lg 8-Aza-8-benzyl-7,7,9,9-tetramethyl-2-(mtoluoyloxymethyl l ,4-dioxa-spiro[ 4.5 ]decane. bp 220 226C/0.001 mmHg 8-Aza-2-(p-chlorobenzoyloxymethyl)-7,7,9,9-

tetramethyl-l,4-dioxa-spiro[4.5]decane. bp 205 207C/2 mmHg 2-(o-Anisoyloxymethyl)-8-aza-7,7,9,9-tetramethyl- 1,4-dioxa-spir0[4.5]decane. bp 215 217C/3 mmHg 2-(o-Anisoyloxymethyl )-8-aza-7,7,8,9,9-

pentamethyl- 1 ,4-dioxa-spiro[4.5 ]decane. bp 216 223C/1 mmHg Bis( 8-aza-7,7,9 ,9-tetramethyl-l ,4-dioxa-spiro[4.5 2-decylmethyl)adipate. bp 250C/2 mmHg- Bis( 8-a za-7,7,9 ,9-tetramethyl-1 ,4-dioxa-spiro[4.5

2-decylmethyl)sebacate p-toluenesulfonate. 145 147C.

Bis( 8-aza-7 ,7,9 ,9-tetramethyll ,4-dioxa-spiro[4.5

2-decylmethyl)succinate. by 250C/2 mmHg 8-Aza-7,7 ,9,9-tetramethyl-2-stearoyloxymethyl-1 ,4-

dioxaspiro[45.]decane mp 32 34C.

8-Aza-7 ,7 ,8 ,9,9-pentamethyl-Z-stearoyloxymethyl- Referential Example 10 9-Aza-3-ethoxymethoxymethyl-3 ,8,8 ,10,10- pentamethyl- 1 ,5-dioxaspiro[5.5 undecane (Illustrated compound 11-51) To a solution of 5 g. of 9-aza-3-hydroxymethyl- 3,8,8,10,lO-pentamethyl-1,5-dioxaspiro[5.5]undecane and 5 g. of chloromethyl ethyl ether in 60 ml. of ether was added 10 ml. of triethylamine at 5 10C. and the reaction was effected at room temperature for 1 hour and with heating under reflux for additional 3 hours. After cooling, 30 ml. of an 30% aqueous solution of potassium carbonate was added to the reaction liquid and extraction with ether was done. The ether solution was subjected to distillation under reduced pressure after drying to give the end product as colorless liquid boiling at 138 140C/3 mmHg.

Analysis for C H NO Calculated: C, 64.73%; H, 10.54%; N, 4.44% Found: C, 64.35%; H, 10.43%; N, 4.41%

Referential Example 11 2-Allyloxymethyl-8-aza-7 ,7,9,9-tetramethyl-1 ,4-dioxaspiro[4.5]decane (Illustrated compound IV-59) To a solution of 4.6 g. of 8-aza-2-hydroxymethyl- 7,7 ,9 ,9-tetramethyll ,4-dioxa-spiro[ 4.5] decane dissolved in 20 ml. of dimethylformamide was added 1.1 g. of a 50% dispersion of sodium hydride in 0.2 g. portions. After evolution of hydrogen ceases, the reaction was effected at room temperature for additional 1 hour. To the solution was added 2.5 g. of allyl bromide under ice-cooling and the reaction was effected at room temperature for 1 hour and then at 45C for additional 1 hour. Then, the reaction mixture was poured into 60 g. of ice and extraction with ether was done. The ether solution was dried and subjected to distillation under reduced pressure to give the end product as colorless liquid boiling at 1 14C/2 mmHg Analysis for C H NO Calculated: C, 66.88%; H,

10.10%; N, 5.20% Found: C, 66.94%; H, 9.98%;'

IR spectrum (liquid film):v 1645 cm In accordance with the method described in Referential Examples 10 and 11, the following compounds were synthesized. The compound of the formula (11),

9-Aza-3-benzyloxymethyl-3 ,8,8,9 ,10, l0-hexamethyl- 1 ,5-dioxa-spiro[5.5 ]undecane. bp 1 187C/0.8 mmHg The compound of the formula 8-AZa-2-(2,3-epoxypropyloxymethyl)-7,7,9,9-

tetramethyl-l,4-dioxa-spiro[4.5]decane. bp 132 C/0.003 mmHg 8-Aza-2-methoxymethy1-7 ,7,9,9-tetramethyl-1 ,4-

dioxa-spiro-[4.5]decane. bp 94 95C/2mm1-1g 2-Allyloxymethy1-8-aza-7,7,8 ,9,9-pentamethyl-1 ,4-

dioxaspiro[4.5]decane. bp 122 124C/1 mmHg 8-Aza-2-benzyloxymethyl-7 ,7,9,9-tetramethyl- 1 ,4-

dioxa-spiro[4.5]decane. bp 168 170C/1 mmHg Referential Example 12 2,2,6,6-Tetramethyl- 1 -octylpiperidine-4-spiro-2 (l',3-dioxane)-5'-spiro-5-(1",3"-dioxane)-2"- Spiro-4"'-(2',2',6",6"'-tetramethylpiperidine) (lllustrated compound 111-3) and 2,2,6,6-tetramethyl-1- octylpiperidine-4-spiro-2'-( 1 ,3'-dioxane)-5'-spiro-5 (1,3"-dioxane)-2"-spiro-4-(2",2"',6",6"- tetramethyl- 1 '-octy1piperidine) (Illustrated pound Ill-4) To 8.2 g. of 2,2,6,6-tetramethylpiperidine-4-spiro-2'- (1',3'-dioxane)-5-spiro-5"-( l ,3-dioxane)-2' com- 31 Spiro-4'-(2",2",6,6-tetramethylpiperidine)' were added 8.5 g. of octyl bromide, 6.2 g. of potassium carbonate and 0.5 g. of sodium acetate and heating was effected at 185 190C. with stirring for 7 hours. After completion of the reaction, the potassium carbonate was filtered off, to the filtrate were added an aqueous solution of sodium hydroxide and benzene, separation of liquid was made by shaking, the benzene layer was recovered, dried and concentrated. The residue was flown into a silica gel column and fractions from elution with benzene gave crystalline mass, which was recrystallized from petroleum ether to give the end product, the N,N-dioctyl derivative as white crystals melting at 136 137C.

Analysis for C H- N O, Calculated: C, 73.76%; H, 11.75%; N, 4.41% Found: C, 74.04%; H, 11.75%; N, 4.48%

Then, fractions from elution with ether gave crystalline mass, which was recrystallized from petroleum ether to give the end product, the N-monooctyl derivative as white crystals melting at 104 105.5C.

Analysis for C H l\l O Calculated: C, 71.21%; H, 11.18%; N, 5.36% Found: C, 71.36%; H, 11.19%; N, 5.45%

Referential Example 13 2-Acetoxymethyl-8-aza-8-ethoxycarbonylmethyl- 7,7,9,9-tetramethyl- 1 ,4-dioxa-spiro[4.5 ]decane (lllustrated compound lV-17) To 4 g. of 2-acetoxymethyl-8-aza-7,7,9,9- tetramethyll ,4-dioxa-spiro[4.5 ]decane were added 0.6 g. of sodium hydroxide, 0.3 g. of sodium iodide and 20 ml. of benzene and to the resulting suspension was added 3.7 g. of ethyl monobromoacetate at C. The reaction was effected at room temperature and then at 50 60C. for additional 1 hour. After cooling, to the reaction liquid was added an 5% aqueous solution of potassium carbonate and extraction with benzene was done. The benzene solution was washed with a saturated solution of sodium chloride in water, dried and concentrated. The residue was chromatographed with a silica gel column, fractions from elution with a solvent of benzenezn-hexanezethyl acetate 4:2:1 gave crystalline mass, which was then recrystallized from petroleum ether to give the end product as white crystals melting at 82 83C.

Analysis for C H NO Calculated: C, 60.48%; H, 8.74%; N, 3.93% Found: C, 60.20%; H, 8.65%; N, 3.66%

IR spectrum (Nujol mull): v 1745, 1735 cm ln accordance with the method described in Referential Examples 12 and 13, the following compounds were synthesized. The compounds of the formula (II):

9-Aza-3-(2,3-epoxypropyloxymethyl)-3,8,8,9,10,10-

hexamethyl- 1 ,5-dioxa-spiro[5.5 undecane. bp 159 160C/1 mmHg 3-Acetoxymethyl-9-aza-9-(2,3-epoxypropyl)- 3,8,8,10,lO-pentamethyl-l ,5-dioxaspiro[5.5]undecane. mp 106 107C.

3-Acetoxymethyl-9-aza-9-benzyloxycarbonyl- 3,8,8, 10,10-pentamethy1-l ,5-dioxaspiro[5.5]undecane. mp 96.5 97.5C.

' 3-Acetoxymethyl-9-aza-3-ethyl-9- methoxycarbonylmethyl-8,8,10,10-tetramethyl- 1,5-dioxa-spiro[5.5] undecane mp 65 67.5C. The compounds of the formula (11]).

1-( 2-Hydroxyethyl )-2,2 ,6,-tetramethylpiperidine-4- 1-( 2-Acetoxyethyl)-2,2,6,6-tetramethylpiperidine-4' spiro-2-(1',3-di0xane)-5-spiro-5 1 ",3- dioxane)-2"-spiro-4 1 "-(2-acetoxyethy1)- 2,2,6",6-tetramethylpiperidine]. mp 172- 183C.

1-(2-Acryloyloxyethyl)-2,2,6,6-

tetramethylpiperidine-4-spiro-2( 1,3'-dioxane)- 5-spiro-5"-(1",3"-dioxane)-2-spiro-4"-[1"- (2-acryloyloxyethyl)-2,2",6"',6-tetramethylpiperidine]. mp 162 163C.

1-(2-Benzoyloxyethyl)-2,2,6,6-

tetramethylpiperidine-4-spiro-2-( l ,3 -dioxane)- 5-spiro5"-( 1 ",3"-dioxane)-2"-spiro-4"'-[,1 (2-benxoyloxyethyl)-",2",6,6"'-tetramethylpiperidine]. mp 243 245C.

1-( 2,3-Epoxypropyl)-2 ,2,6,6-tetramethylpiperidine- 4-spiro-2'-(1',3 '-dioxane)-5-spiro-5-(1",3"- dioxane)-2"-spiro-4-[1-(2,3-epoxypropyl)- 2",2,6",6"'-tetramethylpiperidine]. mp 157 159C.

2,2,6,6-Tetramethyl-1-(2- stearoyloxyethyl)piperidine-4-spiro-2'-( 1 ,3- dioxane)-5'-spiro-5 -(1",3-dioxane)-2"-spiro- 4"-[2,2,6",6"-tetramethyl-1"-(2- stearoyloxyethyl)piperidine] mp 72C.

2,2,6,6-Tetramethyll methoxycarbonylmethylpiperidine-4-spiro-2- 1 ,3 -dioxane)-5'-spiro-5-(1,3-dioxane)-2- spiro-4-(2,2",6,6-tetramethyl-1 methoxycarbonylmethylpiperidine) mp 165 167C.

1-Allyl-2,2,6,6-tetramethylpiperidine-4-spiro-2 (1,3-dioxane)-5-spiro-5-(1,3-dioxane)-2- spiro-4-( 1 -al1y1-2,2"',6,6"-tetramethylpiperidine) mp 158 159C. The compounds of the formula (IV):

2-Acetoxymethyl-8-allyl-8-aza-7,7,9,9-tetramethyll,4-dioxa-spiro[4.5]decane. bp 153C/1 mmHg.

2-Acetoxymethyl-8-aza-8-benzyl-7,7,9,9-

tetramethyl-l,4-dioxa-spiro[4.5]decane. bp 152 154C/0.002 mmHg 2-Acetoxymethyl-8-aza-8-(2,3-epoxypropyl)- 7,7,9,9-tetramethyl-1 ,4-dioxa-spiro[4.5] decane. bp 162 165C/0.002 mmHg 2-Acetoxymethyl-8-aza-8-(2-hydroxyethyl)-7,7,9,9- tetramethyl-l ,4-dioxa-spiro[4.5] decane. bp 154- 155C/0.0008 mmHg 2-Acetoxymethyl-8-(2-acetoxyethyl)-8-aza-7,7,9,9-

1 tetramethyl-l,4-dioxa-spiro[4.5]decane. bp 159 162C/0.0014 mmHg 2-Acetoxymethyl-8-aza-8-cyanomethyl-7,7,9,9-

tetramethyl-l,4-dioxa-spiro[4.5]decane. mp 59 60C.

8-Aza-8-(2-benzoyloxyethyl)-2-benzoyloxymethyl- 7,7,9,9-tetramethyl- 1 ,4-dioxa-spiro[4.5] decane. mp 110 111C.

8-Aza-2-(p-chlorobenzoyloxymethyl)-7,7,9,9-

tetramethyl- 1 ,4-dioxa-8-( 2-propynyl )-spiro[4.51 decane. mp 102 103C. The compound of the formula (V):

Cis-2,4,7-trioxabicyclo [3.3.0]octane-3-spiro-4' (1',2,2,6,6-pentamethylpiperidine). mp 83 84C.

Referential Example 14 9-Aza-3-ethyl-8,8,9, 10,1 O-pentamethyll ,5-dioxa-3- phenylcarbamoyloxymethyl-spiro[5.5]undecane (Illustrated compound 11-44) To 3 g. of 9-aza-3-ethyl-3-hydroxymethyl- 8,8,9,lO,10-pentamethyl-l ,5-dioxaspiro[5.5]undecane were added 2 ml. of triethylamine and 30 ml. of benzene and to the solution was added with stirring a solution of 1.3 g. of phenyl isocyanate dissolved in 20 ml. of benzene. The reaction was effected with heating at 70 75C. for 4.5 hours. The reaction liquid was concentrated and the residual liquid was flown into a silica gel column. Elution with a mixed solvent of benzene-ether (1:1) gave crystalline mass, which was then recrystallized from petroleum ether to give the end product as white crystals melting at 94C. Analysis for C23H35N2O4 Calculated: C, 68.28%; H, 8.97%; N, 6.93% Found: C, 68.39%; H, 8.88%; N, 6.85%

In accordance with the method as shown in Referential Example 14, the following compounds were synthesized. The compounds of the formula (IV):

8-Aza-2-ethylcarbamoyloxymethy1-7,7,8,9,9-

pentamethyl- 1 ,4-dioxa-spiro[4.5 ldecane. bp 156 160C/0.003 mml-lg 8-Aza-7,7,8,9,9-pentamethyl-1,4-dioxa-2- phenylcarbamoyloxymethyl-spiro[4.5 ldecane.

170 172C/0.0004 mml-lg What we claim is:

1. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a.

compound having the formula R I j 0 R CH CH n (I) wherein R represents a hydrogen atom, an alkyl group, a substituted alkyl group, an alkenyl group, an alkynyl group, a substituted or unsubstituted aralkyl group, an aliphatic acyl group, an alkoxycarbonyl group or an aralkoxycarbonyl group,

n is an integer of 1 to 4,

R represents, when n is l, a hydrogen atom, an aliphatic, aromatic or heterocyclic monoacyl group, an alkyl group, an alkenyl group, an alkynyl group, an aralkyl group, an aryl group, an alkoxyalkyl grup, an epoxyalkyl group, an alkoxysulfonylalkyl, group, an N-substituted carbamoyl group, an N- substituted thiocarbamoyl group, a monovalent group from an oxoacid or a group in which R represents a hydrogen atom, a lower alkyl group or a phenyl group and R represents an alkyl group,

when n is 2, R represents a carbonyl group, an aliphatic or aromatic diacyl group, an alkylene group, an

alkenylene group, an alkynylene group, an aralyklene group, an N-substituted dicarbamoyl group or a divalent group from an oxoacid, when n is 3, R represents an aromatic triacyl group or a trivalent group from an oxoacid, and

when n is 4, R represents an aromatic tetraacyl group, and A represents a group in which R represents a hydrogen atom or a lower alkyl group and, when the above n is 1, R together with R may represent a group CH3 CH3 -C1-I2O CH CH3 3 in which R represents the same group as defined under R above and may be the same or different from R,, or A represents a group in which m is l or 2, and R represents a hydrogen atom, and, when the above m and n are both 1, R represents a methylene group together with R 2. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyolefin.

3. A composition as claimed in claim 1, wherein the synthetic polymeric material is lowor high-density polyethylene or polypropylene or polystyrene.

4. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyvinyl chloride or a polyvinylidene chloride.

5. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyacetal.

6. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyester.

7. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyamide.

8. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyurethane.

9. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a compound having the formula n I I) wherein R represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a substituted alkyl group having 1 to 3 carbon atoms in its alkyl part and which is selected from the group consisting of hydroxyalkyl, alkoxyalkyl having 1 to 4 carbon atoms in its alkoxy, acyloxyalkyl in which the acyl is a saturated aliphatic acyl having 2 to 18 carbon atoms, an unsaturated aliphatic acyl having 3 to 4 carbon atoms, or benzyl; cyanoalkyl, halogenoalkyl, epoxyalkyl and alkoxycarbonylalkyl having 1 to 4 carbon atoms in its alkoxy; an alkenyl group having 3 to 4 carbon atoms, an alkynyl group having 3 or 4 carbon atoms, a benzyl group, a benzyl group substituted with a halogen or methyl, a saturated or unsaturated aliphatic acyl group having 2 to 8 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, or a benzoyloxycarbonyl group,

n is an integer of 1 to 4,

R represents, when n is l, a hydrogen atom, a saturated aliphatic acyl group having 1 to 18 carbon atoms, and which may have a sulfur atom in the acyl chain,

an unsaturated aliphatic acyl group having 3 to 6 carbon atoms, wherein both the saturated and unsaturated acyl group may have an unsubstituted phenyl group or a phenyl group which is substituted by alkyl groups having 1 to 4 carbon atoms and/or by hydroxy; a benzoyl or naphthoyl group which may be substituted with an alkyl or alkoxy group having 1 to 4 carbon atoms, a halogen atom or a hydroxy group, a furoyl group, an isonicotinoyl group, a nicotinoyl group, a morpholinocarbonyl group, an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 3 or 4 carbon atoms; an alkynyl group having 3 or 4 carbon atoms, an aralkyl group having 7 or 8 carbon atoms, an aryl group having 6 to 1 1 carbon atoms, an alkoxyalkyl group having 1 to 4 carbon atoms both in the alkyl and alkoxy, a 2,3-epoxypropyl group, an alkoxysulfonylalkyl group having lto 4 carbon atoms both in the alkyl and alkoxy, a carbamoyl or thiocarbamoyl group which is substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl or cyclohexyl group; a group derived from benzenesulfinic, benzenesulfonic, methansulfonic, p-toluenesulfonic, diphenylphosphoric, C C dialkylphosphoric, diphenylphosphorous or C C dialkylphosphorous acid by removal of one hydroxy group, or a group in which R represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or a phenyl group, and R represents an alkyl group having 1 to 8 carbon atoms,

when n is 2, R represents a carbonyl group, a saturated aliphatic diacyl group having 2 to 18 carbon atoms, and which may have a sulfur atom in the acyl chain. an unsaturated aliphatic diacyl group having 4 to 6 carbon atoms, an aromatic diacyl group having 8 carbon atoms, an alkylene group having 2 to 6 carbon atoms, an alkylene group having 4 to 6 carbon atoms, an alkynylene group having 4 to 6 carbon atoms, an aralkylene group having 8 to carbon atoms, a dicarbamoyl group which is substituted with an alkylene group having 1 to 6 carbon atoms, with a phenylene, tolylene or methanediphenylene group;

or a group derived from sulfurous, sulfuric or phenylphosphorous acid by removal of two hydroxy groups,

when' n is 3, R represents an aromatic triacyl group having 9 carbon atoms or a group derived from phosphoric, phosphorous or boric acid by removal of three hydroxy groups,

when n is 4, R represents an aromatic tetraacyl group having 10 carbon atoms, and

R represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms.

10. A composition as claimed in claim 9, wherein R is a hydrogen atom, a alkyl group having 1 to 4 carbon atoms, an allyl group, a benzyl group, an alkoxycarbonylmethyl group having 1 to 4 carbon atoms in its alkoxy, the 2,3-epoxypropyl group, an acyloxyethyl group having a saturated aliphatic acyl with 2 to 18 carbon atoms, or a saturated aliphatic acyl group having 2 to 4 carbon atoms.

11. A composition as claimed in claim 9, wherein R is a hydrogen atom or a methyl group.

12. A composition as claimed in claim 9, wherein n is l or 2 and R represents, when n is 1, a saturated aliphatic acyl group having 2 to 18 carbon atoms, a benzoyl group which may be substituted with an alkyl group having l to 4 carbon atoms or with hydroxy, an alkyl group having 1 to 18 carbon atoms, an allyl group or the 2,3-epoxypropyl group, and, when n is 2, a satu rated aliphatic diacyl group having 4 to 12 carbon atoms or the terephthaloyl group.

13. A composition as claimed in claim 9, wherein R is the methyl or ethyl group.

14. A composition as claimed in claim 9, wherein R represents a hydrogen atom or the methyl group, n is 1 or 2, R represents, when n is l, a saturated aliphatic acyl group having 2 to 18 carbon atoms, or a benzoyl group which may be substituted with an alkyl group having 1 to 4 carbon atoms or with hydroxy, and, when n is 2, a saturated aliphatic diacyl group having 4 to 12 carbon atoms, or the terephthaloyl group, and R represents the methyl or ethyl group.

15. A composition as claimed in claim 9, wherein said compound (II) is selected from the group consisting of 9-aza-3-ethyl-8,8,9,10,10-pentamethyl-l,5- dioxa-3-stearoy1oxymethyl-spiro[ 5 5 ]undecane,

9-aza-3-ethyl-3-stearoyloXymethyl-8,8,10,10-

tetramethyll ,5-dioxa-spiro[5.5 ]undecane,

9-aza-3-benzoyloxymethyl-3-ethyl-8,8 l O, l 0- tetramethyl- 1 ,5-dioxa-spiro[5.5 ]-undecane, 9-aza-3-benzoyloxymethy1-3-ethyl-8,8,9,10,10- pentamethyl-l ,5-dioxa-spiro[5 .5 ]undecane, 9-aza-3,8,8,9,10,lO-hexamethy1-l ,5-dioxa-3- salicyloyloxymethyl-spiro[ 5.5 ]undecane, 9-aza-3-ethyl-8,8 ,9,10,IO-pentamethyl-1,5-dioxa-3- salicyloyloxymethyl-spiro[ 5 .5 ]undecane 9-aza-3-ethy1-3-salicyloyloxymethyl-8 ,8,10,10-

tetramethyll ,5-dioxa-spiro[5 .5 ]undecane,

bis( 9-aza-3 ,8,8 ,10,lO-pentamethy1-1,5-dioxaspiro 5 .5 ]-3-undecylmethyl )adipate, bis(9-aza-3,8,8,9,10,10-hexamethy1-1 ,S-dioxaspiro 5 .5 ]-3-unclecylmethy1)adipate bis(9-aza-3-ethy1-8,8,10,10-tetramethyl-1,S-dioxaspiro[ 5 .5 ]-3-undecylmethyl)adipate, bis(9-aza-3-ethyl-8,8,9,10,10-pentamethyl-1,5- dioxa-spiro[ 5.5 ]-3-undecylmethyl )adipate,

bis( 9-aza-3-ethyl-8 ,8,10, lO-tetramethyl-l ,5-dioxaspiro[5.5]-3-undecylmethyl)terephthalate, and

37 bis(9-aza-3-ethyl-8,8,9,l0,lO-pentamethyl-1,5-

dioxa-spiro[ 5.5 l-3-undecylmethyl )terephthalate. 16. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a compoundhaving the formula wherein R and R are the same or different and each of which represents a hydrogen atom, an alkyl group having 1 to 8 carbon atoms, a substituted alkyl group having 1 to 3 carbon atoms in its alkyl and which is selected from the group consisting of hydroxyalkyl, alkoxyalkyl having 1 to 4 carbon atoms in its alkoxy, acyloxyalkyl in which the acyl is a saturated aliphatic acyl having 2 to 18 carbon atoms, an unsaturated aliphatic acyl having 3 or 4 carbon atoms, or benzoyl; cyanoalkyl, halogenoalkyl, epoxyalkyl and alkoxycarbonylalkyl having 1 to 4 carbon atoms in its alkoxy; an alkenyl group having 3 or 4 carbon atoms, an alkynyl group having 3 or 4 carbon atoms, a benzyl group, a benzyl group substituted with a halogen atom or a methyl group, a saturated or unsaturated aliphatic acyl group having 2 to 8 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, or a benzoyloxycarbonyl group.

17. A composition as claimed in claim 16, wherein both of R and R represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an allyl group, a benzyl group, an alkoxycarbonylmethyl group having I to 4 carbon atom in its alkoxy, a 2,3-epoxypropyl group, an acyloxyethyl group having a saturated acyl with 2 to 18 carbon atoms, or a saturated aliphatic acyl group having 2 to 4 carbon atoms.

18. A composition as claimed in claim 16, wherein both of R and R represent a hydrogen atom, the methyl or allyl group.

19. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a compound having the formula R represents a hydrogen atom, a alkyl group having 1 to 8 carbon atoms, a substituted alkyl group having 1 to 3 carbon atoms in its alkyl and which is selected from the group consisting of hydroxyalkyl, alkoxyalkyl having 1 to 4 carbon atoms in its alkoxy, acyloxyalkyl in which the acyl is a saturated aliphatic acyl having 2 to 18 carbon atoms, an unsaturated aliphatic acyl having 3 or 4 carbon atoms, or benzoyl; cyanoalkyl, halogenoalkyl, epoxyalkyl and alkoxycarbonylalkyl having 1 'to 4 carbon atoms in its alkoxy; an alkenyl group having 3 or 4 carbon atoms, an alkynyl group having 3 or 4 carbon atoms, a benzyl group, a benzyl group substituted with a halogen atom or a methyl group, a saturated or unsaturated aliphatic acyl group having 2 to 8 carbon atoms, an alkoxycarbonyl group having 2 to 5 carbon atoms, or a benzoyloxycarbonyl group,

m is l or 2,

n is an integer of l to 4, and

R represents, when n is l, a hydrogen atom, a saturated aliphatic acyl group having I to 18 carbon atoms, and which may have a sulfur atom in the acyl chain,

an unsaturated aliphatic acyl group having 3 to 6 carbon atoms, wherein both the saturated and unsaturated acyl group may have an unsubstituted phenyl group or a phenyl group which is substituted by alkyl groups having 1 to 4 carbon atoms and/or by hydroxy; a benzoyl or naphthoyl group which may be substituted with an alkyl or alkoxy group having 1 to 4 carbon atoms, a halogen atom or a hydroxy group; a furoyl group, an isonicotinoyl group, a nicotinoyl group, a morpholinocarbonyl group, an alkyl group having 1 to 18 carbon atoms, an alkenyl group having 3 or 4 carbon atoms, an alkynyl group having 3 or 4 carbon atoms, an aralkyl group having 7 or 8 carbon atoms, an aryl group having 6 to l 1 carbon atoms, an alkoxyalkyl group having 1 to 4 carbon atoms both in the alkoxy and alkyl, a 2,3-epoxypropyl group, an alkoxysulfonylalkyl group having l to 4 carbon atoms both in the alkoxy and alkyl, a carbamoyl or thiocarbamoyl group which is substituted with an alkyl group having 1 to 4 carbon atoms, a phenyl or cyclohexyl group; a group derived from benzenesulfinic, benzenesulfonic, methanesulfonic, p-toluenesulfonic, diphenylphosphoric, C C dialkylphosphoric, diphenylphosphorous or C C dialkylphosphorous acid by removal of one hydroxy group, or a group in which R represents a hydrogen atom, an alkyl group having 1 to 4 carbon. atoms or a phenyl grouop, and R represents an alkyl group having 1 to 8 carbon atoms,

when n is 2, R 'represents a carbonyl group, a saturated aliphatic diacyl group having 2 to 18 carbon atoms, and which may have a sulfur atom in the acyl chain, an unsaturated aliphatic diacyl group having 4 to 6 carbon atoms, an aromatic diacyl group having 8 carbon atoms, an alkylene group having 2 to 6 car- 'bon atoms, an alkenylene group having 4 to 6 carbon atoms, an alkynylene group having 4 to 6 carbon atoms, an aralkylene group having 8 to 10 carbon atoms, a dicarbamoyl group which is substituted with an alkylene group having 1 to 6 carbon atoms, a phenylene, tolylene or methanediphenylene group; or a group derived from sulfurous, sulfuric or phenylphosphorous acid by removal of two hydroxy groups, 

1. A COMPOSITION COMPRISING A SYNTHETIC POLYMERIC MATERIAL AND FROM 0.01 TO 5.0 PERCENT BY WEIGHT, BASED ON THE WEIGHT OF THE SYNTHETIC POLYMERIC MATERIAL, OF A COMPOUND HAVING THE FORMULA
 2. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyolefin.
 3. A composition as claimed in claim 1, wherein the synthetic polymeric material is low- or high-density polyethylene or polypropylene or polystyrene.
 4. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyvinyl chloride or a polyvinylidene chloride.
 5. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyacetal.
 6. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyester.
 7. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyamide.
 8. A composition as claimed in claim 1, wherein the synthetic polymeric material is a polyurethane.
 9. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a compound having the formula
 10. A composition as claimed in claim 9, wherein R1 is a hydrogen atom, a alkyl group having 1 to 4 carbon atoms, an allyl group, a benzyl group, an alkoxycarbonylmethyl group having 1 to 4 carbon atoms in its alkoxy, the 2,3-epoxypropyl group, an acyloxyethyl group having a saturated aliphatic acyl with 2 to 18 carbon atoms, or a saturated aliphatic acyl group having 2 to 4 carbon atoms.
 11. A composition as claimed in claim 9, wherein R1 is a hydrogen atom or a methyl group.
 12. A composition as claimed in claim 9, wherein n is 1 or 2 and R2 represents, when n is 1, a saturated aliphatic acyl group having 2 to 18 carbon atoms, a benzoyl group which may be substituted with an alkyl group having 1 to 4 carbon atoms or with hydroxy, an alkyl group having 1 to 18 carbon atoms, an allyl group or the 2,3-epoxypropyl group, and, when n is 2, a saturated aliphatic diacyl group having 4 to 12 carbon atoms or the terephthaloyl group.
 13. A composition as claimed in claim 9, wherein R5'' is the methyl or ethyl group.
 14. A composition as claimed in claim 9, wherein R1 represents a hydrogen atom or the methyl group, n is 1 or 2, R2 represents, when n is 1, a saturated aliphatic acyl group having 2 to 18 carbon atoms, or a benzoyl group which may be substituted with an alkyl group having 1 to 4 carbon atoms or with hydroxy, and, when n is 2, a saturated aliphatic diacyl group having 4 to 12 carbon atoms, or the terephthaloyl group, and R5'' represents the methyl or ethyl group.
 15. A composition as claimed in claim 9, wherein said compound (II) is selected from the group consisting of 9-aza-3-ethyl-8,8, 9,10,10-pentamethyl-1,5-dioxa-3-stearoyloxymethyl-spiro(5.5)undecane, 9-aza-3-ethyl-3-stearoyloxymethyl-8,8,10,10-tetramethyl-1,5-dioxa -spiro(5.5)undecane, 9-aza-3-benzoyloxymethyl-3-ethyl-8,8,10,10-tetramethyl-1,5-dioxa-spiro(5.5) -undecane, 9-aza-3-benzoyloxymethyl-3-ethyl-8,8,9,10,10-pentamethyl-1,5-dioxa -spiro(5.5)undecane, 9-aza-3,8,8,9,10,10-hexamethyl-1,5-dioxa-3-salicyloyloxymethyl -spiro(5.5)undecane, 9-aza-3-ethyl-8,8,9,10,10-pentamethyl-1,5-dioxa-3-salicyloyloxymethyl -spiro(5.5)undecane, 9-aza-3-ethyl-3-salicyloyloxymethyl-8,8,10,10-tetramethyl-1,5-dioxa -spiro(5.5)undecane, bis(9-aza-3,8,8,10,10-pentamethyl-1,5-dioxa-spiro(5.5)-3 -undecylmethyl)adipate, bis(9-aza-3,8,8,9,10,10-hexamethyl-1,5-dioxa-spiro(5.5)-3 -undecylmethyl)adipate, bis(9-aza-3-ethyl-8,8,10,10-tetramethyl-1,5-dioxa-spiro(5.5)-3 -undecylmethyl)adipate, bis(9-aza-3-ethyl-8,8,9,10,10-pentamethyl-1,5-dioxa-spiro(5.5)-3 -undecylmethyl)adipate, bis(9-aza-3-ethyl-8,8,10,10-tetramethyl-1,5-dioxa-spiro(5.5)-3 -undecylmethyl)terephthalate, and bis(9-aza-3-ethyl-8,8,9,10,10-pentamethyl-1,5-dioxa-spiro(5.5)-3 -undecylmethyl)terephthalate.
 16. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a compound having the formula
 17. A composition as claimed in claim 16, wherein both of R1 and R6 represent a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an allyl group, a benzyl group, an alkoxycarbonylmethyl group having 1 to 4 carbon atom in its alkoxy, a 2,3-epoxypropyl group, an acyloxyethyl group having a saturated acyl with 2 to 18 carbon atoms, or a saturated aliphatic acyl group having 2 to 4 carbon atoms.
 18. A composition as claimed in claim 16, wherein both of R1 and R6 represent a hydrogen atom, the methyl or allyl group.
 19. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a compound having the formula
 20. A composition as claimed in claim 19, wherein R1 is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an allyl group, a benzyl group, an alkoxycarbonylmethyl group having 1 to 4 carbon atoms in its alkoxy, the 2,3-epoxypropyl group, an acyloxyethyl group having a saturated aliphatic acyl with 2 to 18 carbon atoms, or a saturated aliphatic acyl having 2 to 4 carbon atoms.
 21. A composition as claimed in claim 19, wherein R1 is a hydrogen atom or the methyl group.
 22. A composiTion as claimed in claim 19, wherein n is 1 or 2, m is 1, and R2 represents, when n is 1, a saturated aliphatic acyl group having 2 to 18 carbon atoms, a benzoyl group which may be substituted with an alkyl group having 1 to 4 carbon atoms or with hydroxy, an alkyl group having 1 to 18 carbon atoms, an allyl group or the 2,3-epoxypropyl group, and, when n is 2, a saturated aliphatic diacyl group having 4 to 12 carbon atoms or the terephthaloyl group.
 23. A composition as claimed in claim 19, wherein R1 represents a hydrogen atom or the methyl group, m is 1, n is 1 or 2, and R2 represents, when n is 1, a saturated aliphatic acyl group having 2 to 18 carbon atoms, or a benzoyl group which may be substituted with an alkyl group having 1 to 4 carbon atoms or with hydroxy, and, when n is 2, a saturated aliphatic diacyl group having 4 to 12 carbon atoms or the terephthaloyl group.
 24. A composition as claimed in claim 19, wherein said compound (IV) is selected from the group consisting of 8-aza-7,7,9,9tetramethyl-2-stearoyloxymethyl-1,4-dioxa-spiro(4.5)decane, 8aza-7,7,8,9,9-pentamethyl-1,4-dioxa-2-stearoyloxymethyl-spiro(4.5)decane, 8-aza-2-benzoyloxymethyl-7,7,9,9-tetramethyl-1,4-dioxa-spiro(4.5)decane, 8-aza-2-benzoyloxymethyl-7,7,8,9,9-pentamethyl-1,4-dioxaspiro(4.5)decane, 8-aza-7,7,8,9,9-pentamethyl-1,4-dioxa-2-salicyloyloxymethylspiro(4.5)decane, bis(8-aza-7,7,9,9-tetramethyl-1,4-dioxa-spiro(4.5)-decylmethyl)terephthalate, and bis(8-aza-7,7,8,9,9-pentamethyl-1,4-dioxa-spiro(4.5)-2 -decylmethyl)terephthalate.
 25. A composition comprising a synthetic polymeric material and from 0.01 to 5.0 percent by weight, based on the weight of the synthetic polymeric material, of a compound having the formula
 26. A composition as claimed in claim 25, wherein R1 is a hydrogen atom or the methyl group. 